Large-torque reciprocating rotation type magnetorheological damper

Abstract

The invention relates to the technical field of magnetorheological dampers, and discloses a large-torque reciprocating rotation type magnetorheological damper which comprises a liquid cavity, an air blowing mechanism is arranged in the liquid cavity, a cooling mechanism is arranged at one end of the air blowing mechanism, a damping mechanism is arranged in the liquid cavity, and a stirring mechanism is arranged at the bottom of the liquid cavity. The air blowing mechanism comprises a piston, the outer portion of the piston is slidably connected to the inner wall of the liquid cavity, a baffle is fixedly connected to the inner wall of the liquid cavity, an air exhaust pipeline is fixedly connected to the inner wall of the liquid cavity, a filter screen is installed in the air exhaust pipeline, and an air outlet pipeline is fixedly connected to the inner wall of the side, away from the air exhaust pipeline, of the liquid cavity. The rotating disc is pressed downwards, the driving shaft body drives the piston to extrude gas in the liquid cavity, under the control of the one-way valve, the gas is guided into the cooling pipeline, heat generated during operation of the electromagnetic coil is absorbed, and therefore temperature rise of the electromagnetic coil is effectively controlled, and long-term stable operation of the damper is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of magnetorheological dampers, in particular to a large-torque reciprocating rotary magnetorheological damper. Background Art

[0002] As the core equipment in the field of vibration control, dampers are widely used in engineering, machinery, automobile and other industries. Their main function is to control the vibration amplitude by dissipating vibration energy, reduce the impact of external vibration on structures and equipment, and thus ensure the stability and safety of the system. For this reason, dampers are widely used in the market.

[0003] However, existing conventional dampers are difficult to achieve fast response and precise damping adjustment, and cannot meet the needs of high-frequency vibration or nonlinear vibration in complex working conditions. Some magnetorheological dampers change the damping effect through the magnetic field, but the heat generated by the electromagnetic coil cannot be effectively dissipated, which can easily lead to excessive temperature rise, thus affecting the long-term stability of the damper. In addition, the magnetic field generated by the electromagnetic coil changes the viscosity of the magnetorheological fluid, which may produce sediment during long-term operation, causing performance degradation and reducing the damping effect. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a large-torque reciprocating rotary magnetorheological damper, which solves the problem that the existing magnetorheological damper changes the damping effect through the magnetic field, but the heat generated by the electromagnetic coil cannot be effectively dissipated, which easily leads to excessive temperature rise, thereby affecting the long-term stability of the damper.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a large-torque reciprocating rotary magnetorheological damper, comprising a liquid chamber, a blowing mechanism is arranged inside the liquid chamber, a cooling mechanism is arranged at one end of the blowing mechanism, a damping mechanism is arranged inside the liquid chamber, and a stirring mechanism is arranged at the bottom of the liquid chamber; the blowing mechanism comprises a piston, the outer part of the piston is slidably connected to the inner wall of the liquid chamber, the inner wall of the liquid chamber is fixedly connected to a baffle, the inner wall of the liquid chamber is fixedly connected to an exhaust pipe, a filter is installed inside the exhaust pipe, the inner wall of the liquid chamber away from the exhaust pipe is fixedly connected to an outlet pipe, the outer part of the outlet pipe is arranged inside the liquid chamber, and a one-way valve is installed on the outer part of the exhaust pipe and the outlet pipe.

[0006] Preferably, the cooling mechanism includes a diversion pipe, the outside of the diversion pipe is fixedly connected to one end of the outlet pipe, both ends of the diversion pipe are fixedly connected to the cooling pipe, one end of the cooling pipe is fixedly connected to the exhaust pipe, and one end of the exhaust pipe is arranged outside the liquid cavity.

[0007] Preferably, the inner wall of the liquid cavity is slidably connected to a shaft body, the top of the shaft body is rotatably connected to a turntable, and the bottom of the liquid cavity is fixedly connected to a mounting plate.

[0008] Preferably, the stirring mechanism includes a threaded rod, the top of the threaded rod is fixedly connected to the bottom of the shaft body, the external thread of the threaded rod is connected to a rotating ring, the external part of the rotating ring is fixedly connected to two limit blocks, the bottom of the limit block is fixedly connected to a stirring rod, and the bottom of the stirring rod is in contact with the inner wall of the liquid chamber.

[0009] Preferably, the damping mechanism comprises a fixed block, the exterior of the fixed block is fixedly connected to the inner wall of the liquid chamber, a plurality of connecting grooves are penetrated through the interior of the fixed block, and an electromagnetic coil is installed inside the fixed block.

[0010] Preferably, the outer portion of the shaft body is slidably connected to the inner wall of the fixed block, and the inner wall of the piston is fixedly connected to the outer portion of the shaft body.

[0011] Preferably, the cooling pipe is arranged inside the fixed block, and the cooling pipe is arranged outside the electromagnetic coil.

[0012] Preferably, a limiting groove is provided on the inner wall of the liquid cavity, and the outer portion of the limiting block is slidably connected to the inner wall of the limiting groove.

[0013] Preferably, a sealing block is installed on the inner wall of the baffle, and the outer part of the shaft body is slidably connected to the inner wall of the sealing block.

[0014] Working principle: When the device is used, during the vibration process, the turntable is pressed down or raised by an object, and the shaft is synchronously driven to move along the inner wall of the liquid cavity. The liquid cavity is used as the main containing device, thereby driving the blowing mechanism to squeeze the gas inside the liquid cavity. When the blowing mechanism is pressed down, the one-way valve outside the air extraction pipeline is in a closed state, and the one-way valve outside the air outlet pipeline is in an open state, so that the gas is transported to the cooling pipeline through the air outlet pipeline, so that the heat generated by the electromagnetic coil inside the fixed block can be conveniently absorbed. When the blowing mechanism rises, the one-way valve outside the air extraction pipeline is in an open state, and the one-way valve outside the air outlet pipeline is in a closed state, so that the external gas is extracted, and after being purified by the filter, the extracted gas is prevented from entering the liquid cavity with dust, so that the heat generated by the electromagnetic coil can be effectively absorbed, and one end of the air outlet pipeline is connected to the diversion pipeline to introduce the gas into the cooling pipeline, so as to absorb the heat emitted by the electromagnetic coil, thereby effectively preventing the damping effect from being affected by excessive heat;

[0015] The threaded rod at the bottom end of the shaft moves downward, thereby squeezing the liquid inside the liquid cavity to move upward through the connecting groove, and then connecting the electromagnetic coil set inside the fixed block to generate a controllable magnetic field. The magnetic field acts on the magnetorheological fluid through the connecting groove to change the liquid viscosity, so that the damping force can be conveniently adjusted;

[0016] The threaded rod is driven downward by the shaft, and the threaded groove on the inner wall of the rotating ring cooperates with the threaded rod, so that the rotating ring and the stirring rod can be driven to rotate, so that one end of the two limit blocks rotates along the inner wall of the limit groove, thereby ensuring that the stirring rod contacts the inner wall of the liquid chamber and evenly distributes the magnetorheological fluid, and preventing the sediment generated in the liquid from affecting the damping effect.

[0017] The present invention provides a large torque reciprocating rotary magnetorheological damper. It has the following beneficial effects:

[0018] 1. The present invention drives the piston to squeeze the gas inside the liquid chamber by pressing down or rising the turntable, and guides the gas into the shunt pipe to the cooling pipe under the control of the one-way valve to absorb the heat generated by the electromagnetic coil during operation, thereby effectively controlling the temperature rise of the electromagnetic coil and ensuring the long-term stable operation of the damper.

[0019] 2. The present invention uses the threaded rod at the bottom end of the shaft to squeeze the liquid in the liquid cavity to move upward through the connecting groove, and then connects the electromagnetic coil arranged inside the fixed block to generate a controllable magnetic field. The magnetic field acts on the magnetorheological fluid through the connecting groove to realize the change of liquid viscosity. In this way, the characteristic of adjusting the viscosity of the liquid by the magnetic field is utilized to achieve rapid response and precise control of the damping effect, thereby improving the performance stability of the system in vibration control and energy absorption.

[0020] 3. The present invention drives the threaded rod to move downward through the shaft, thereby driving the rotating ring and the stirring rod to rotate, so that one end of the two limit blocks rotates along the inner wall of the limit groove, thereby ensuring that the stirring rod contacts the inner wall of the liquid chamber and evenly distributes the magnetorheological fluid, thereby ensuring sufficient mixing of the magnetorheological fluid inside the liquid chamber, avoiding the occurrence of stratification, effectively preventing the accumulation of liquid sediments, and maintaining the consistency of liquid performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the liquid chamber of the present invention;

[0023] Figure 3 It is a schematic diagram of the cooling pipeline structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the electromagnetic coil of the present invention;

[0025] Figure 5 It is a schematic diagram of the diversion pipeline structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the limit block structure of the present invention;

[0027] Figure 7 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 8 for Figure 2 Enlarged view of point B in the middle.

[0029] Among them, 1. liquid chamber; 2. shaft body; 3. turntable; 4. blowing mechanism; 401. piston; 402. baffle; 403. air outlet pipe; 404. exhaust pipe; 405. one-way valve; 5. cooling mechanism; 501. diversion pipe; 502. cooling pipe; 503. exhaust pipe; 6. damping mechanism; 601. fixing block; 602. connecting groove; 603. electromagnetic coil; 7. stirring mechanism; 701. limit block; 702. rotating ring; 703. stirring rod; 704. limit groove; 705. threaded rod; 8. mounting plate; 9. sealing block. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Please see attached Figure 1 , Attachment Figure 2 and attached Figure 5 An embodiment of the present invention provides a large torque reciprocating rotary magnetorheological damper, including a liquid chamber 1, a blowing mechanism 4 is arranged inside the liquid chamber 1, wherein the blowing mechanism 4 is used to drive the gas flow for heat transfer and heat dissipation, a cooling mechanism 5 is arranged at one end of the blowing mechanism 4, wherein the cooling mechanism 5 is used to absorb the heat generated by the electromagnetic coil 603, a damping mechanism 6 is arranged inside the liquid chamber 1, wherein the damping mechanism 6 is used to adjust the damping force, and comprises an electromagnetic coil 603 and a magnetorheological fluid, and a stirring mechanism 7 is arranged at the bottom of the liquid chamber 1, wherein the stirring mechanism 7 is used to ensure uniform mixing of the liquid to prevent sediment from affecting the performance.

[0032] Please see attached Figure 1 , Attachment Figure 2 and attached Figure 7The blowing mechanism 4 includes a piston 401, the outer portion of the piston 401 is slidably connected to the inner wall of the liquid chamber 1, the inner wall of the liquid chamber 1 is fixedly connected with a baffle 402, the inner wall of the liquid chamber 1 is fixedly connected with an air extraction pipe 404, wherein the interior of the air extraction pipe 404 is provided with a filter screen for filtering dust and impurities in the incoming gas, the inner wall of the liquid chamber 1 away from the air extraction pipe 404 is fixedly connected with an outlet pipe 403, the outer portion of the outlet pipe 403 is arranged inside the liquid chamber 1, wherein the outlet pipe 403 cooperates with the air extraction pipe 404 to complete the introduction and discharge of gas, and the outer portions of the air extraction pipe 404 and the outlet pipe 403 are both provided with a one-way valve 405, wherein the one-way valve 405 is used to control the one-way flow of gas. The inner wall of the liquid chamber 1 is slidably connected with a shaft body 2, the top of the shaft body 2 is rotatably connected with a turntable 3, and the bottom of the liquid chamber 1 is fixedly connected with a mounting plate 8. A sealing block 9 is installed on the inner wall of the baffle 402, and the outer part of the shaft body 2 is slidably connected to the inner wall of the sealing block 9, wherein the baffle 402 plays a partitioning role and cooperates with the sealing block 9 to perform sealing.

[0033] Please see attached Figure 2 , Attachment Figure 3 and attached Figure 5 The cooling mechanism 5 includes a shunt pipe 501, the outside of which is fixedly connected to one end of the outlet pipe 403, wherein the shunt pipe 501 is connected to the outlet pipe 403 for shunting the gas, and both ends of the shunt pipe 501 are fixedly connected to a cooling pipe 502, wherein both ends of the cooling pipe 502 are connected to the shunt pipe 501 for heat transfer and heat dissipation, and one end of the cooling pipe 502 is fixedly connected to an exhaust pipe 503, and one end of the exhaust pipe 503 is arranged outside the liquid cavity 1, wherein the exhaust pipe 503 is used to discharge the gas that absorbs heat to the outside of the liquid cavity 1. The cooling pipe 502 is arranged inside the fixed block 601, and the cooling pipe 502 is arranged outside the electromagnetic coil 603 for absorbing the heat of the electromagnetic coil 603 and improving the heat dissipation efficiency. The outside of the shaft body 2 is slidably connected to the inner wall of the fixed block 601, and the inner wall of the piston 401 is fixedly connected to the outside of the shaft body 2, wherein the piston 401 is used to squeeze the gas inside the liquid cavity 1.

[0034] Please see attached Figure 4 , Attachment Figure 6 and attached Figure 8The stirring mechanism 7 includes a threaded rod 705, the top of which is fixedly connected to the bottom of the shaft body 2, wherein the threaded rod 705 is connected to the bottom of the shaft body 2 for driving stirring, the external thread of the threaded rod 705 is connected to a rotating ring 702, the external fixed connection of the rotating ring 702 is provided with two limit blocks 701, wherein the rotating ring 702 drives the stirring rod 703 to rotate by cooperating with the threaded rod 705, the bottom of the limit block 701 is fixedly connected to the stirring rod 703, wherein the limit block 701 is used to limit the movement trajectory of the stirring rod 703 in the liquid chamber 1, wherein the bottom of the stirring rod 703 contacts the inner wall of the liquid chamber 1, and is used to stir the liquid for uniform mixing to prevent precipitation. The damping mechanism 6 includes a fixed block 601, which is installed on the inner wall of the liquid chamber 1 to play a supporting role. The outer part of the fixed block 601 is fixedly connected to the inner wall of the liquid chamber 1. The inner part of the fixed block 601 is provided with a plurality of connecting grooves 602, wherein the connecting grooves 602 penetrate the fixed block 601 and are used to connect the channels for the movement of the magnetorheological fluid. The inner part of the fixed block 601 is provided with an electromagnetic coil 603, wherein the electromagnetic coil 603 is used to generate a magnetic field to act on the magnetorheological fluid. The inner wall of the liquid chamber 1 is provided with a limiting groove 704, and the outer part of the limiting block 701 is slidably connected to the inner wall of the limiting groove 704 to ensure the stability of the movement trajectory of the stirring mechanism 7.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high torque reciprocating rotary magnetorheological damper, comprising a liquid chamber (1), characterized in that: The liquid chamber (1) is provided with an air blowing mechanism (4), one end of the air blowing mechanism (4) is provided with a cooling mechanism (5), the liquid chamber (1) is provided with a damping mechanism (6), and the bottom of the liquid chamber (1) is provided with a stirring mechanism (7); The blowing mechanism (4) comprises a piston (401), the outer portion of the piston (401) is slidably connected to the inner wall of the liquid chamber (1), the inner wall of the liquid chamber (1) is fixedly connected to a baffle (402), the inner wall of the liquid chamber (1) is fixedly connected to an air extraction pipe (404), a filter is installed inside the air extraction pipe (404), the inner wall of the liquid chamber (1) away from the air extraction pipe (404) is fixedly connected to an air outlet pipe (403), the outer portion of the air outlet pipe (403) is arranged inside the liquid chamber (1), and the outer portions of the air extraction pipe (404) and the air outlet pipe (403) are both installed with a one-way valve (405).

2. A high torque reciprocating rotary magnetorheological damper according to claim 1, characterized in that: The cooling mechanism (5) comprises a shunt pipe (501), the outside of the shunt pipe (501) is fixedly connected to one end of the air outlet pipe (403), both ends of the shunt pipe (501) are fixedly connected to a cooling pipe (502), one end of the cooling pipe (502) is fixedly connected to an exhaust pipe (503), and one end of the exhaust pipe (503) is arranged outside the liquid chamber (1).

3. A high torque reciprocating rotary magnetorheological damper according to claim 1, characterized in that: The inner wall of the liquid chamber (1) is slidably connected to a shaft body (2), the top of the shaft body (2) is rotatably connected to a turntable (3), and the bottom of the liquid chamber (1) is fixedly connected to a mounting plate (8).

4. A high torque reciprocating rotary magnetorheological damper according to claim 1, characterized in that: The stirring mechanism (7) comprises a threaded rod (705), the top of the threaded rod (705) is fixedly connected to the bottom of the shaft body (2), the external thread of the threaded rod (705) is connected to a rotating ring (702), the external part of the rotating ring (702) is fixedly connected to two limit blocks (701), the bottom of the limit block (701) is fixedly connected to a stirring rod (703), and the bottom of the stirring rod (703) is in contact with the inner wall of the liquid chamber (1).

5. A high torque reciprocating rotary magnetorheological damper according to claim 3, characterized in that: The damping mechanism (6) comprises a fixed block (601), the outside of the fixed block (601) is fixedly connected to the inner wall of the liquid chamber (1), a plurality of connecting grooves (602) are provided inside the fixed block (601), and an electromagnetic coil (603) is installed inside the fixed block (601).

6. A high torque reciprocating rotary magnetorheological damper according to claim 5, characterized in that: The outside of the shaft body (2) is slidably connected to the inner wall of the fixed block (601), and the inner wall of the piston (401) is fixedly connected to the outside of the shaft body (2).

7. A high torque reciprocating rotary magnetorheological damper according to claim 2, characterized in that: The cooling pipe (502) is arranged inside the fixed block (601), and the cooling pipe (502) is arranged outside the electromagnetic coil (603).

8. A high torque reciprocating rotary magnetorheological damper according to claim 4, characterized in that: The inner wall of the liquid chamber (1) is provided with a limiting groove (704), and the outer portion of the limiting block (701) is slidably connected to the inner wall of the limiting groove (704).

9. A high torque reciprocating rotary magnetorheological damper according to claim 3, characterized in that: A sealing block (9) is installed on the inner wall of the baffle (402), and the outer portion of the shaft body (2) is slidably connected to the inner wall of the sealing block (9).

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